Chemical energy Electrical energy
Characteristic
Chemical reaction
-use oxidation
-supply fuels and oxygen from outside
-emission products to outside
Fossil fuel is limited
Fossil fuel is the main reason of global warming
The rate of energy dependence on imports is 96.8%
Increase energy import price by increasing international oil
In describing the answer to the question below, try to share your opinions on the basis of evidences such as articles and books. Also provide information of the evidence (author, title, journal name, etc.).
1. Explain what happens in terms of mechanical/chemical properties when making products using metal-based 3D additive manufacturing technology. (10 points)mechanical properties
전통적
● Definition of plasma
Plasma is one of the four fundamental states of matter, along with solid, liquid, and gas. It is an ionized gas consisting of a collection of charged particles, including ions, electrons, and neutral atoms or molecules. Plasma can be found naturally in the universe in the form of stars, lightning, and auroras, but it can also be artificially created and controlled for
Introduction (What is plasma?)
1. Definition of plasma
Plasma is one of the four fundamental states of matter, along with solid, liquid, and gas. It is an ionized gas consisting of a collection of charged particles, including ions, electrons, and neutral atoms or molecules. Plasma can be found naturally in the universe in the form of stars, lightning, and auroras, but it can also be artif
Ⅰ. Introduction
1. Study background and objectives
Recently, due to environmental pollution and climate change, attention to environment is more growing than ever. Especially, buildings form 40% of energy and resource consumption, 30-40% of carbon dioxide emission, 20-25% of waste discharge, 17% of water consumption, and 25% of wood consumption, so buildings are mainly responsible for
1. Introduction
‘enzyme’이라는 단어를 접했을 때 많은 사람들이 실험실에서 사용하는 것으로만 생각한다. 실제 생활과의 거리가 먼 것이라고 생각하는 경우가 많이 있다. 그러나 우리 삶의 많은 부분에 효소가 들어와 있다고 할 수 있다. 특히나 효소의 사용이 보편화 되고 많은 연구와 개발이 이루어
1. INTRODUCTION
Medical Tourism is outside his residence to go to other local and foreign medical institutions and medical institutions, local recreation agencies through their own health care or maintenance of disease, recovery, and other activities that promote their own depending on the state of health care in the field, sightseeing, shopping and cultural experience that also means that s
3. Synapse Characteristics
① Presynaptic cell에 신호 도착
② Na+ channel open, Ca+ channel open
③ Ca 이 synaptic vesicle들과 결합
④ vesicle들이 안에 담긴 neurotransmitter들을 synaptic cleft 방향으로 방출
⑤ Neurotransmitter는 receptor에 결합
⑥ postsynaptic cell의 Na channel open
⑦ postsynaptic cell에 depolarization
What is Bioenergy?
Bioenergy is renewable energy made available from materials derived from biological sources. Biomass is any organic material which has stored sunlight in the form of chemical energy. As a fuel it may include wood, wood waste, straw, manure, sugarcane, and many other byproducts from a variety of agricultural processes.
So, Why do we produce Bioenergy?
One reason governments
Ⅰ. Introduction
1) Location
Russia is located in the north Eurasia continent (Far East Asia ~ Europe). Russia is the largest country in the world which is about 1/8 of the world’s land area. Because of this huge territory, there is an 11-hour time difference between East and West.
2) Climate
The huge territory of Russia also makes a various climate zone. Basically, Russia has continental